Quarter	US Dollars, sum over component sub-periods
1999-01-01	60331778301.9882000
1999-04-01	87509796350.8449100
1999-07-01	18764386293.8761020
1999-10-01	8959958611.7193100
2000-01-01	33202535863.8725000
2000-04-01	2983014699.9508400
2000-07-01	-58029768013.5846000
2000-10-01	-24628329767.1308000
2001-01-01	42666159898.4071960
2001-04-01	142016518.9697800
2001-07-01	56705986874.3090000
2001-10-01	-13407976255.6715000
2002-01-01	56520089571.4538000
2002-04-01	19401949849.3384000
2002-07-01	55250263958.8909000
2002-10-01	-46402167611.7506000
2003-01-01	19616929512.8153000
2003-04-01	54703474648.1382000
2003-07-01	49456452599.7317050
2003-10-01	9244243583.9561900
2004-01-01	102008958653.5330000
2004-04-01	102556958793.7950000
2004-07-01	74916827530.4726000
2004-10-01	48220521571.6832050
2005-01-01	71865559084.5504000
2005-04-01	50259263452.8358000
2005-07-01	-122820825375.0909900
2005-10-01	-55607149397.9628000
2006-01-01	-12286360988.7773000
2006-04-01	-16312388517.1139980
2006-07-01	48251906040.3692000
2006-10-01	64820665384.4168000
2007-01-01	93672019618.5159000
2007-04-01	121317239488.3340000
2007-07-01	38042802820.5415950
2007-10-01	273441391834.0900000
2008-01-01	86951337918.6168000
2008-04-01	155184938090.1530000
2008-07-01	137459849732.7940000
2008-10-01	45179908231.8805000
2009-01-01	112180139997.1900000
2009-04-01	72471238561.4370000
2009-07-01	96544658344.6232900
2009-10-01	640130777.5868291
2010-01-01	94170729047.2779000
2010-04-01	158084574336.1439800
2010-07-01	14609025090.0509000
2010-10-01	781793696.9515901
2011-01-01	144421515434.6150000
2011-04-01	123514239581.1330100
2011-07-01	97013791828.5775000
2011-10-01	40189664625.2783050
2012-01-01	93835542781.4703000
2012-04-01	61095825343.0425950
2012-07-01	120859604942.7380000
2012-10-01	5619584080.5459100
2013-01-01	85139096613.2948900
2013-04-01	11285252361.5833990
2013-07-01	89724676655.4656000
2013-10-01	55628579048.9033050
2014-01-01	-12090272244.9224000
2014-04-01	114665641538.2309900
2014-07-01	136904264360.2119900
2014-10-01	-12163636979.0763000
2015-01-01	-125797325798.3600000
2015-04-01	33462837835.5916000
2015-07-01	14001892813.4928000
2015-10-01	12815382106.0791990
2016-01-01	-90287442602.3692000
2016-04-01	-80552267857.6461000
2016-07-01	19152144532.8325000
2016-10-01	-15686070344.3315000
2017-01-01	135031731886.1820000
2017-04-01	22407005715.8669000
2017-07-01	94901828096.0613100
2017-10-01	101481656204.9899900
2018-01-01	-142992555226.0360000